//引入axios
import axios from 'axios'
// import md from './md'
import Vue from 'vue'
import {
    LoadingPlugin
} from 'vux'
Vue.use(LoadingPlugin)
let cancel, promiseArr = {}
const CancelToken = axios.CancelToken;
axios.defaults.timeout = 5000;
axios.defaults.baseURL = '';
//请求拦截器
axios.interceptors.request.use(config => {
    //发起请求时，取消掉当前正在进行的相同请求
    if (promiseArr[config.url]) {
        Vue.$vux.loading.show({
            text: '正在加载'
        })
        promiseArr[config.url]('操作取消')
        promiseArr[config.url] = cancel
    } else {
        Vue.$vux.loading.show({
            text: '正在加载'
        })
        promiseArr[config.url] = cancel
    }
    return config
}, error => {
    return Promise.reject(error)
})

//响应拦截器即异常处理
axios.interceptors.response.use(response => {
    Vue.$vux.loading.hide()
    return response
}, err => {
    if (err && err.response) {
        Vue.$vux.loading.hide()
        switch (err.response.status) {
            case 400:
                err.message = '错误请求'
                break;
            case 401:
                err.message = '未授权，请重新登录'
                break;
            case 403:
                err.message = '拒绝访问'
                break;
            case 404:
                err.message = '请求错误,未找到该资源'
                break;
            case 405:
                err.message = '请求方法未允许'
                break;
            case 408:
                err.message = '请求超时'
                break;
            case 500:
                err.message = '服务器端出错'
                break;
            case 501:
                err.message = '网络未实现'
                break;
            case 502:
                err.message = '网络错误'
                break;
            case 503:
                err.message = '服务不可用'
                break;
            case 504:
                err.message = '网络超时'
                break;
            case 505:
                err.message = 'http版本不支持该请求'
                break;
            default:
                err.message = `连接错误${err.response.status}`
        }
    } else {
        err.message = "连接到服务器失败"
    }
    return Promise.resolve(err)
})

// 设置默认请求头
// axios.defaults.headers = {
//     // Authorization: 'Bearer ' + JSON.parse(window.localStorage.getItem('userInfo')).token,
//     'Content-Type': 'application/json;charset=UTF-8',
//     'Cache-Control': 'no-cache',
//     isApp: 'isApp'
// }
axios.defaults.timeout = 8000

//get请求
export function get(url, param, headers) {
    return new Promise((resolve, reject) => {
        axios({
            method: 'get',
            url,
            params: param,
            headers: headers,
            cancelToken: new CancelToken(c => {
                cancel = c
            })
        }).then(res => {
            resolve(res)
        }).catch(err => {
            reject(err)
        })
    })
}
//post请求
export function post(url, param) {
    return new Promise((resolve, reject) => {
        axios({
            method: 'post',
            url,
            data: param,
            cancelToken: new CancelToken(c => {
                cancel = c
            })
        }).then(res => {
            resolve(res)
        }).catch(err => {
            reject(err)
        })
    })
}